<template>
	<div class="login_container">
		<div class="login_box">
			
			<!-- 头像区域 -->
			<div class="avatar_box">
				<img src="../assets/logo.png" alt="">
			</div>
			
			<!-- 登录表单区域 -->
			<el-form ref="loginFormRef"
			:model="loginForm" :rules="loginFormRules" 
			label-width="0px" class="login_form">
				<!-- 用户名 -->
			  <el-form-item prop="username">
			    <el-input v-model="loginForm.username" 
				prefix-icon="iconfont icon-user" ></el-input>
			  </el-form-item>
			  
			  <!-- 密码-->
			  <el-form-item prop="password">
			    <el-input v-model="loginForm.password" 
				type="password"
				prefix-icon="iconfont icon-3702mima" ></el-input>
			  </el-form-item>
			  
			  <!-- 按钮区域-->
			  <el-form-item class="btns">
			    <el-button type="primary" @click="login">登录</el-button>
				<el-button type="info" @click="resetLoginForm">重置</el-button>
			  </el-form-item>
			</el-form>
		</div>
	</div>
</template>

<script>
	export default {
		name: 'Login',
		data(){
			return {
				//登录表单的数据绑定对象
				loginForm: {
					username: 'admin',
					password: '123456'
				},
				//表单的验证规则对象
				loginFormRules: {
					//用户名的验证规则
					username: [
						{ required: true, message: '请输入用户名', trigger: 'blur' },
						{ min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
					],
					//密码的验证规则
					password: [
						{ required: true, message: '请输入密码', trigger: 'blur' },
						{ min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
					]
				}
			}
		},
		methods: {
			//点击重置按钮，重置表单
			resetLoginForm(){
				//console.log(this)
				this.$refs.loginFormRef.resetFields()
			},
			login(){
				this.$refs.loginFormRef.validate(async (valid) => {
					//console.log(valid)
					if(!valid) return
					
					const {data: res} = await this.$http.post('login', this.loginForm)
					//console.log(res)
					
					if(res.meta.status != 200){
						//console.log('登录失败')
						this.$message.error('登录失败!')
					}else{
						//console.log("登录成功")
						this.$message.success('登录成功!')
						
						//保存服务器返回的token
						//console.log(res)
						window.sessionStorage.setItem('token', res.data.token)
						
						//页面跳转
						this.$router.push('/home')
					}
				})
			}
		}
	}
</script>

<style lang="less" scoped="scoped">
	.login_container {
		height: 100%;
		background-color: #2b4b6b;
	}
	.login_box {
		position: absolute;
		top: 50%;
		left: 50%;
		
		transform: translate(-50%, -50%);
		
		width: 450px;
		height: 300px;
		background-color: #fff;
		border-radius: 3px;
		
		.avatar_box {
			position: absolute;
			left: 50%;
			transform: translate(-50%, -50%);
			width: 130px;
			height: 130px;
			padding: 10px;
			border: 1px solid #eee;
			border-radius: 50%;
			box-shadow: 0 0 10px #ddd;
			background-color: #fff;
			
			img {
				width: 100%;
				height: 100%;
				border-radius: 50%;
				background-color: #eee;
			}
		}
	}
	
	.login_form {
		box-sizing: border-box;
		position: absolute;
		bottom: 0;
		width: 100%;
		padding: 0 10px;
	}
	
	.btns {
		display: flex;
		justify-content: flex-end;
	}
	
</style>
